Looking for my family

My maiden name is Crowe, originally spelled Crow. My father was David Ellis Crowe, born June 29 1940 in Rives Missouri. My grandfather was William Augustus or Agusta Crow(e) born April 1st 1882. My great-grandfather was John Crow. I think he was born in 1854. My grandpa William's 1st wife was Kate but married my grandmother, Mabel Clara Ellis, on Jan. 1 1926, i think. Grandpa William was also sheriff of Dunklin County Missouri in 1921.At that time, grandpa still spelled his last name Crow. He added the 'e' on the end later on. If anyone has information about my family, please email me at anya82crowe@gmail.com. I know I have family out there I just don't know who they are.